I am confident that the answer should be.....<span>A protein acts as a pump and moves calcium ions from an area of low concentration to an area of high concentration.
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Answer:
B
Explanation:
Because the roots of the tree were what where controling the erosion
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Answer:
C and D
Found the answer from an old quizziz I had
Positive ions from a base and negative ions from an acid form a it helps for example ypu have positive ions right well take my smart advice well the positive ions and the negative ions they combine together to make sulphour
B is better because it has more surface area.
